1. An arthroscopic system comprising:a disposable arthroscope having a distal end and a proximal end and comprising:a light source set up in said distal end for providing a light;
a lens set set up in said distal end for gathering said light, wherein said lens set has a front end with a bevel angle;
an image sensor directly coupled to said lens set for generating a digital raw data from said light;
a control interface set up on a transmitter between said distal end and said proximal end, wherein said control interface is configured to generate a rotation angle control signal for controlling and indicating a rotation angle of said digital raw data, and said transmitter is a Serializer/Deserializer (SerDes) configured to transmit said digital raw data and said rotation angle control signal toward said proximal end; and
a cable set up at said proximal end for transmitting said digital raw data and said rotation angle control signal;
a processing system attached to said proximal end for capturing and converting said digital raw data into a digital video data, wherein said digital video data is digitally rotated according to said rotation angle control signal; and
a video display device for displaying said digital video data.